CN115433469A - Preparation method of high-viscosity high-elasticity high-toughness modified asphalt for airport pavement - Google Patents
Preparation method of high-viscosity high-elasticity high-toughness modified asphalt for airport pavement Download PDFInfo
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- 239000010426 asphalt Substances 0.000 title claims abstract description 90
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 239000011787 zinc oxide Substances 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 22
- 239000003607 modifier Substances 0.000 claims abstract description 20
- 239000003381 stabilizer Substances 0.000 claims abstract description 19
- 239000012745 toughening agent Substances 0.000 claims abstract description 19
- 238000010008 shearing Methods 0.000 claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 27
- 238000012360 testing method Methods 0.000 claims description 23
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 22
- 230000035515 penetration Effects 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000003208 petroleum Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 5
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 5
- 229920001897 terpolymer Polymers 0.000 claims description 4
- 230000000704 physical effect Effects 0.000 claims description 3
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 20
- 238000011160 research Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920000428 triblock copolymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the field of application of modified asphalt for a pavement, and provides a preparation method of high-viscosity high-elasticity high-toughness modified asphalt for an airport pavement, which comprises the following steps: heating the matrix asphalt to 120-130 ℃, adding a solubilizer, uniformly mixing at 160-170 ℃, adding an SBS modifier, uniformly mixing, heating to 180-190 ℃, adding a toughening agent and nano zinc oxide, uniformly mixing by high-speed shearing, adding a stabilizer, continuously uniformly mixing by high-speed shearing, and finally, developing for 30-40 Min at 180-190 ℃ to obtain the modified asphalt. The invention can lead the modified asphalt to have the characteristics of high viscosity, high elasticity and high toughness, saves the cost and has simple preparation process.
Description
Technical Field
The invention belongs to the field of application of modified asphalt for a pavement, and particularly relates to a preparation method of high-viscosity high-elasticity high-toughness modified asphalt for an airport pavement.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The maintenance and repair technology of the pavement is more important while the civil aviation airport construction is rapidly developed, the pavement overlay technology can rapidly and efficiently repair the defects of pavement rutting, loosening and the like and has the advantages of skid resistance, noise reduction, resource saving and the like, and the key point of the pavement overlay technology is to research and develop the high-viscosity, high-elasticity and high-toughness asphalt cement suitable for the pavement of the airport.
In order to research and develop high-performance asphalt cement, the comprehensive performance of the asphalt cement is enhanced by adding a high-viscosity modifier in related researches at home and abroad, so that the corresponding use requirements are met.
In the research of related high-viscosity high-elasticity modified asphalt, styrene-butadiene-styrene triblock copolymer (SBS) can obviously improve the high-temperature stability and durability of the asphalt and is the modifier which is most widely applied, and the research shows that when the mixing amount of the SBS modifier reaches 6%, the performance of the prepared modified asphalt can meet the requirements of high-viscosity high-elasticity road asphalt. However, the mixing and dissolution of SBS and the base asphalt belong to physical process, and the performance of the modified asphalt is related to the compatibility of the two.
Related researches show that the solubilizer can improve the compatibility of the SBS modifier and the matrix asphalt and improve the performance of the asphalt C 9 Petroleum resin and furfural extract oil are two solubilizers which are widely applied.
And secondly, a terpolymer (PTW) of glycidyl acrylate, ethylene and butyl acrylate is adopted, after the toughening agent (PTW) is dissolved in the asphalt, epoxy groups in PTW molecules react with free carboxylic groups and phenolic hydroxyl groups in asphalt molecules, so that the stability of the asphalt is improved, and the asphalt also has a toughening effect, and the viscosity and toughness of the asphalt can be effectively improved.
However, the performance of the modified asphalt currently used for airport pavement still needs to be improved.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method of high-viscosity high-elasticity high-toughness modified asphalt for an airport pavement, which is suitable for being used as an overlay of the airport pavement and meets the standard requirements.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a high-viscosity high-elasticity high-toughness modified asphalt for an airport pavement, which comprises the following raw materials in parts by weight: 6 percent of SBS modifier, 4 percent of solubilizer, 0.1 to 0.3 percent of flexibilizer and 0.2 to 1 percent of nano zinc oxide; 0.2 percent of reactive stabilizer, and the sum of the percentages of the raw materials is 100 percent.
The invention provides a preparation method of high-viscosity high-elasticity high-toughness modified asphalt for airport pavement, which is characterized in that on the basis of comprehensively considering the overall performance and economic factors of the modified asphalt, a solubilizer for effectively improving the performance of the modified asphalt and a toughening agent capable of improving the viscosity and toughness of the modified asphalt are mixed for use, meanwhile, a certain amount of nano zinc oxide and a reaction type stabilizer are added for ensuring the stability of the modified asphalt, and the optimal mass ratio is optimized according to test results.
The second aspect of the invention provides a preparation method of high-viscosity high-elasticity high-toughness modified asphalt for an airport pavement, which comprises the following steps:
heating the matrix asphalt to 120-130 ℃, adding a solubilizer, uniformly mixing at 160-170 ℃, adding an SBS modifier, uniformly mixing, heating to 180-190 ℃, adding a toughening agent and nano zinc oxide, uniformly mixing by high-speed shearing, adding a stabilizer, continuously uniformly mixing by high-speed shearing, and finally, developing for 30-40 Min at 180-190 ℃ to obtain the modified asphalt.
The invention has the advantages of
The high-viscosity high-elasticity high-toughness modified asphalt has the characteristics of high viscosity, high elasticity and high toughness, the viscosity toughness at 25 ℃ is greater than 25 N.m, the toughness is greater than 15 N.m, the dynamic viscosity at 60 ℃ is far greater than 20000 Pa.s, and the elastic recovery at 25 ℃ is not less than 90%.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
A preparation method of high-viscosity high-elasticity high-toughness modified asphalt for airport pavement comprises the following steps:
1) Preparing raw materials: one group of SBS modifier is 6%, and the other two groups of solubilizer are 4%C 9 Petroleum resin, 4% furfural extract oil and a flexibilizer (PTW) which are respectively 0.1%, 0.2% and 0.3%, nano-zinc oxide which is respectively 0.2%, 0.5% and 1% and a stabilizer which is 0.2%;
2) Determining a solubilizer: the solubilizer applicable in the method is determined through penetration, softening point and ductility tests;
3) Preferably, the suitable mixing amount of the toughening agent (PTW): on the basis of the solubilizer determined in the step 2), adding different amounts of flexibilizers (PTW), dissolving in the modified asphalt in a high-speed shearing mode, and preferably selecting a proper mixing proportion of the flexibilizers (PTW) through penetration, softening point, ductility, viscosity and toughness tests and dynamic viscosity tests;
4) Preferably, the appropriate mixing amount of the nano zinc oxide is as follows: on the basis of determining the proper doping amount of the flexibilizer (PTW) in the step 3), adding different doping amounts of nano zinc oxide, dissolving the nano zinc oxide in the modified asphalt in a high-speed shearing mode, preferably selecting the proper doping proportion of the nano zinc oxide through needle penetration, softening point, ductility, viscosity toughness and dynamic viscosity tests, and carrying out comparative analysis on the high-viscosity modified asphalt prepared by the three existing high-viscosity modifiers and the standard;
5) Determining the final blending proportion: and 4) adding a certain amount of reactive stabilizer into the modified asphalt obtained in the step 4), and then carrying out physical property test to determine the final blending proportion.
In some embodiments, the SBS modifier in step 1) is a styrene-butadiene-styrene triblock copolymer, with a volatility of 0.22%, a hardness of 75.5, and a total styrene content of 30.3%.
In some embodiments, C in said step 1) 9 Petroleum resin is provided by petrochemical company of Zhejiang Hedgeon.
In some embodiments, the furfural extract oil in step 1) is an iran extract oil provided by shengkang chemical company ltd, having a flash point of 220 ℃, a density of 0.98-1.03, a kinematic viscosity of 15-45, an ash content of 0.03%, mechanical impurities of 0.05%, a sulfur content of 0.05, and an aromatic hydrocarbon content of more than 75%.
In some embodiments, the toughening agent (PTW) of step 1) is an ethylene and butyl acrylate terpolymer as a modifier for a plurality of polymers to enhance toughness and has a density of 0.94g/cm 3 Melt means 12g/10min, thermal properties 72 deg.C (162 deg.F), melting point 72 deg.C (162 deg.F).
In some embodiments, the nano zinc oxide in step 1) is provided by Shanghai Xiao Huan nano science and technology, and has a particle size of 20nm and a specific surface of 48.16m 2 (g) apparent density of 0.56g/cm 3 。
In some embodiments, the three high viscosity modifiers described in step 1) are each: high viscosity asphalt modifier (yellow), VE high elastic anti-cracking particles and HVA high viscosity modifier.
In some embodiments, the high shear emulsifier used for high shear in step 3), brand: FLUKO, type: FM300, motor power: 500 (Kw), spindle rotation speed: 11000 (r/min), applicable temperature: 300 In the reaction stage of modified asphalt, the research is mainly used.
The invention utilizes the styrene-butadiene-styrene (SBS) triblock copolymer to modify the matrix asphalt, effectively improves the high-temperature stability and durability of the asphalt, and simultaneously utilizes the solubilizer to reduce the interfacial tension between the component asphalt and the SBS modifier and improve the compatibility between the modifier and the asphalt aiming at the problem of compatibility after the SBS modifier is mixed with the matrix asphalt. Different solubilizers were selected for comparative testing to determine the solubilizers suitable for the present invention.
In addition, the invention also combines the toughening effect of a terpolymer (PTW) of glycidyl acrylate, ethylene and butyl acrylate as a polymer modifier, adopts a composite modification technology, and utilizes the toughening agent (PTW) to enhance the cohesive force of the modified asphalt, so that the finally prepared modified asphalt meets the characteristics of high viscosity, high elasticity and high toughness.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
In the following examples, each raw material was a commercially available product;
wherein the SBS modifier is styrene-butadiene-styrene triblock copolymer, the volatility is 0.22%, the hardness is 75.5, and the total styrene content is 30.3%.
C9 petroleum resin, provided by petrochemical company Limited in Hedgey of Zhejiang.
The furfural extract oil is Iran extract oil provided by Hengshui Shengkang chemical Limited company, the flash point is 220 ℃, the density is 0.98-1.03, the kinematic viscosity is 15-45, the ash content is 0.03%, the mechanical impurities are 0.05%, the sulfur content is 0.05%, and the aromatic hydrocarbon content is more than 75%.
The toughening agent (PTW) is a terpolymer of ethylene and butyl acrylate and has a density of 0.94g/cm 3 Melt means 12g/10min, thermal properties 72 deg.C (162 deg.F), melting point 72 deg.C (162 deg.F).
Nanometer zinc oxide with particle size of 20nm and specific surface of 48.16m, provided by Shanghai Xiao Huan nanometer science and technology Limited 2 (g) apparent density of 0.56g/cm 3 。
The stabilizer is an asphalt stabilizer and is purchased from Shijiazhuang Junlongghong chemical product sales Co.
Example 1
A preparation method of high-viscosity high-elasticity high-toughness modified asphalt for airport pavement comprises the following steps:
1) Preparing raw materials according to the mass ratio:
table one: raw material
2) Respectively swelling the SBS modifier in the step 1) and two different solubilizers together in matrix asphalt at 160 ℃ for 30Min, then quickly heating to 180 ℃, adding a stabilizer after shearing at high speed for 50Min, continuously shearing for 10Min, and finally developing in an oven at 180 ℃ for 30Min to prepare the modified asphalt. According to the test data of penetration, softening point and ductility of the two modified asphalts prepared by analysis, the solubilizer applicable to the invention is determined.
Table two: test results of SBS modified asphalt under the action of different solubilizers
3) And taking the modified asphalt prepared by the optimal solubilizer determined in the step 2 as a research object, respectively adding 0.1%, 0.2% and 0.3% of toughening agent (PTW), shearing at a high speed of 180 ℃ for 30Min, adding a stabilizer, continuously shearing at a high speed for 10Min, developing in a 180 ℃ drying oven for 30Min, preparing the modified asphalt under the mixing amount of 3 different toughening agents (PTW), and preferably selecting the appropriate mixing amount of the PTW toughening agent according to test results.
Table three: modified asphalt test results under the action of different-content toughening agents (PTW)
4) Taking the modified asphalt prepared by the toughening agent (PTW) with proper mixing amount determined in the step 3 as a research object, respectively adding 0.2%, 0.5% and 1% of nano zinc oxide, shearing at a high speed of 180 ℃ for 30Min, then adding a stabilizer, continuously shearing at a high speed for 10Min, further developing in an oven at a temperature of 180 ℃ for 30Min to prepare 3 types of modified asphalt with different nano zinc oxide mixing amounts, and preferably selecting the proper mixing amount of the nano zinc oxide according to test results, test results of the high-viscosity modified asphalt prepared by using the three high-viscosity modifiers and relevant standard comparison analysis.
Table four: test results of modified asphalt under the action of nano zinc oxide with different mixing amounts
Table five: three high-viscosity modified asphalt test results and related standard requirements
The test results were analyzed as follows:
as can be seen from Table II: adding the same amount of C based on 6% of SBS modified asphalt 9 After petroleum resin or furfural extract oil, the penetration degree, softening point and ductility of the two modified asphalts show different modification effects, and the furfural extract oil is a suitable solubilizer in the invention according to test results.
The comprehensive comparison and analysis of the test results in the table three can obtain: when the mixing amount of the toughening agent (PTW) is 0.2%, the comprehensive physical performance index of the modified asphalt prepared based on 6% SBS, 4% furfural extract oil and 0.2% stabilizer is better, namely the proper mixing amount of the toughening agent (PTW) is 0.2%.
From the results of the table, it can be seen that, when the nano zinc oxide doping amount is 0.2%, the comprehensive physical property index of the modified asphalt prepared based on 6% SBS, 4% furfural extract oil, 0.2% flexibilizer (PTW) and 0.2% stabilizer is the best, and the appropriate doping amount of the nano zinc oxide obtained from the test results is 0.2%.
The results in the table four show that when the doping amount of the nano zinc oxide is 0.2% of the proper doping amount, the penetration degree, the softening point and the ductility of the prepared modified asphalt exceed the standard requirements, the viscosity toughness reaches 26.7 N.m, the toughness reaches 20.9 N.m, the dynamic viscosity at 60 ℃ reaches 62204 Pa.s and far exceeds the standard required 20000 Pa.s, and the modified asphalt has the characteristics of high viscosity, high elasticity and high toughness.
Comprehensive analysis shows that when the doping amounts of the toughening agent (PTW) and the nano zinc oxide are 0.2%, the modified asphalt based on 6% SBS and 4% furfural extract oil has the characteristics of high viscosity, high elasticity and high toughness, and the comprehensive performance of the modified asphalt meets the requirements of related technical specifications and is better than that of the high viscosity modified asphalt prepared by the selected high viscosity modifier.
Example 2
According to the findings of example 1, the complete preparation process proposed by the present invention is as follows:
firstly, matrix asphalt is placed in a 120 ℃ oven to be heated to flow, then the mixture is poured into a beaker, 4% furfural extract oil is added, the mixture is stirred for 10Min at 160 ℃, then 6% SBS modifier is added to swell for 30Min, the mixture is heated to 180 ℃, then 0.2% flexibilizer (PTW) and 0.2% nano zinc oxide are added to shear for 30Min at a high speed of 4000r/Min, 0.2% stabilizer is added to continue to shear for 10Min, and finally, the prepared modified asphalt is placed in a 180 ℃ oven to develop for 30Min. Thus, the preparation of the high-viscosity high-elasticity high-toughness modified asphalt for the airport pavement is finished.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The high-viscosity high-elasticity high-toughness modified asphalt for the airport pavement is characterized by comprising the following raw materials in parts by weight: 6 percent of SBS modifier, 4 percent of solubilizer, 0.1 to 0.3 percent of flexibilizer and 0.2 to 1 percent of nano zinc oxide; 0.2 percent of reactive stabilizer, and the sum of the percentages of the raw materials is 100 percent.
2. The high-viscosity, high-elasticity and high-toughness modified asphalt for airport pavement of claim 1, wherein said SBS modifier is styrene-butadiene-styrene triblock copolymer.
3. The high-viscosity, high-elasticity and high-toughness modified asphalt for airport pavement of claim 1, wherein the solubilizer is C9 petroleum resin or furfural extract oil.
4. The high-viscosity, high-elasticity, high-toughness modified asphalt for airport pavement of claim 1 wherein said toughening agent is a terpolymer of ethylene and butyl acrylate.
5. The high-viscosity, high-elasticity, high-toughness modified asphalt for airport pavement of claim 1, wherein the stabilizer asphalt stabilizer is asphalt stabilizer.
6. A preparation method of high-viscosity high-elasticity high-toughness modified asphalt for airport pavement is characterized by comprising the following steps:
heating the matrix asphalt to 120-130 ℃, adding a solubilizer, uniformly mixing at 160-170 ℃, adding an SBS modifier, uniformly mixing, heating to 180-190 ℃, adding a toughening agent and nano zinc oxide, uniformly mixing by high-speed shearing, adding a stabilizer, continuously uniformly mixing by high-speed shearing, and finally, developing for 30-40 Min at 180-190 ℃ to obtain the modified asphalt.
7. The method for preparing the high-viscosity high-elasticity high-toughness modified asphalt for the airport pavement of claim 6, wherein the proper solubilizer is determined by needle penetration, softening point and ductility tests.
8. The method for preparing the high-viscosity high-elasticity high-toughness modified asphalt for the airport pavement of claim 6, wherein the proper mixing amount of the toughening agent is determined by needle penetration, softening point, ductility, toughness and dynamic viscosity tests.
9. The method for preparing the high-viscosity high-elasticity high-toughness modified asphalt for the airport pavement of claim 6, wherein the proper amount of nano zinc oxide is determined by needle penetration, softening point, ductility, toughness and dynamic viscosity tests.
10. The method for preparing the high-viscosity high-elasticity high-toughness modified asphalt for the airport pavement according to claim 6, wherein a physical property test is performed, and the comparison analysis is performed with the high-viscosity modified asphalt prepared by the existing three high-viscosity modifiers and a standard to determine the final proper blending ratio.
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|---|---|---|---|---|
| CN103525107A (en) * | 2013-10-22 | 2014-01-22 | 山西省交通科学研究院 | Preparation method of stable SBS (Styrene Butadiene Styrene) modified asphalt |
| CN108690359A (en) * | 2018-06-04 | 2018-10-23 | 长安大学 | A kind of response type SBS compounding high-viscosity high-elasticity modified pitch and preparation method |
| CN111777863A (en) * | 2020-05-26 | 2020-10-16 | 四川公路桥梁建设集团有限公司 | Preparation method of high-viscosity modified asphalt |
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- 2022-10-08 CN CN202211221063.0A patent/CN115433469A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525107A (en) * | 2013-10-22 | 2014-01-22 | 山西省交通科学研究院 | Preparation method of stable SBS (Styrene Butadiene Styrene) modified asphalt |
| CN108690359A (en) * | 2018-06-04 | 2018-10-23 | 长安大学 | A kind of response type SBS compounding high-viscosity high-elasticity modified pitch and preparation method |
| CN111777863A (en) * | 2020-05-26 | 2020-10-16 | 四川公路桥梁建设集团有限公司 | Preparation method of high-viscosity modified asphalt |
Non-Patent Citations (1)
| Title |
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| 李子云 等: "超薄罩面SBS-PTW 高黏改性沥青组成及路用性能评价" * |
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